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;;; guix-forge --- Guix software forge meta-service
;;; Copyright © 2021, 2022 Arun Isaac <arunisaac@systemreboot.net>
;;;
;;; This file is part of guix-forge.
;;;
;;; guix-forge is free software: you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published
;;; by the Free Software Foundation, either version 3 of the License,
;;; or (at your option) any later version.
;;;
;;; guix-forge is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;;; General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with guix-forge. If not, see
;;; <https://www.gnu.org/licenses/>.
(define-module (forge forge)
#:use-module (gnu)
#:use-module (srfi srfi-1)
#:use-module (ice-9 match)
#:use-module (gnu packages ci)
#:use-module (gnu services mcron)
#:use-module (guix records)
#:use-module (forge laminar)
#:export (forge-service-type
forge-configuration
forge-configuration-projects
forge-project-configuration
forge-project-configuration-user
forge-project-configuration-repository
forge-project-configuration-website-directory
forge-project-configuration-ci-jobs))
(define-record-type* <forge-project-configuration>
forge-project-configuration make-forge-project-configuration
forge-project-configuration?
(name forge-project-configuration-name)
;; The user field is optional because the repository may be remote
;; and not need to be owned by any user.
(user forge-project-configuration-user
(default #f))
(repository forge-project-configuration-repository)
(description forge-project-configuration-description
(default #f))
(website-directory forge-project-configuration-website-directory
(default #f))
(ci-jobs forge-project-configuration-ci-jobs
(default '())))
(define-record-type* <forge-configuration>
forge-configuration make-forge-configuration
forge-configuration?
(projects forge-configuration-projects
(default '())))
(define (post-receive-hook project-name ci-jobs)
"Return a git post-receive-hook that triggers CI-JOBS."
(program-file (string-append project-name "-post-receive-hook")
(with-imported-modules '((guix build utils))
#~(begin
(use-modules (guix build utils))
;; TODO: Only trigger on updates to the main/master branch.
(display "Triggering continuous integration jobs..." (current-error-port))
(newline (current-error-port))
(apply invoke
#$(file-append laminar "/bin/laminarc")
"queue" '#$ci-jobs)))))
(define (forge-activation config)
(let ((projects
(map (lambda (project)
(list (forge-project-configuration-user project)
(forge-project-configuration-repository project)
(forge-project-configuration-description project)
(forge-project-configuration-website-directory project)
(post-receive-hook
(forge-project-configuration-name project)
(map forge-laminar-job-name
(forge-project-configuration-ci-jobs project)))))
(forge-configuration-projects config))))
#~(begin
(use-modules (rnrs io ports)
(srfi srfi-26)
(ice-9 match))
(define (find-regular-files dir)
(find-files dir (lambda (file stat)
(memq (stat:type stat)
'(regular directory)))
#:directories? #t))
(for-each (match-lambda
((username repository description website-directory post-receive-hook)
;; For local repositories only
(when (string-prefix? "/" repository)
;; Set description.
(when description
(call-with-output-file (string-append repository "/description")
(cut put-string <> description)))
;; Install post receive hook.
(let ((hook-link (string-append repository "/hooks/post-receive")))
(when (file-exists? hook-link)
(delete-file hook-link))
(symlink post-receive-hook hook-link))
;; Set ownership of repository files.
(for-each (lambda (file)
(let ((user (getpw username)))
(chown file (passwd:uid user) (passwd:gid user))))
(append (find-regular-files repository))))
;; Set ownership of website directory.
(when website-directory
(let ((user (getpw "laminar")))
(chown website-directory (passwd:uid user) (passwd:gid user))))))
'#$projects))))
(define forge-service-type
(service-type
(name 'forge)
(description "Run guix-forge.")
(extensions (list (service-extension activation-service-type
forge-activation)
(service-extension forge-laminar-service-type
(lambda (config)
(append
;; jobs
(append-map forge-project-configuration-ci-jobs
(forge-configuration-projects config))
;; groups
(filter-map (lambda (project)
(match (forge-project-configuration-ci-jobs project)
(() #f)
((job) #f)
(jobs
(forge-laminar-group
(name (forge-project-configuration-name project))
(regex (string-join (map forge-laminar-job-name jobs)
"|"))))))
(forge-configuration-projects config)))))
;; Set up cron jobs to trigger CI jobs for remote
;; repositories.
;; TODO: Run CI job only if there are new commits
;; in the remote repository.
(service-extension mcron-service-type
(lambda (config)
(filter-map (lambda (project)
(and (not (string-prefix?
"/" (forge-project-configuration-repository project)))
#~(job '(next-day)
#$(post-receive-hook
(forge-project-configuration-name project)
(map forge-laminar-job-name
(forge-project-configuration-ci-jobs project)))
#:user "laminar")))
(forge-configuration-projects config))))))
(default-value (forge-configuration))))
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